🚀 ci: simplify GitHub Actions matrix configuration

Remove redundant include structure and directly specify operating systems in the matrix. This simplifies the workflow configuration while maintaining the same functionality across all platforms.

Author: danielsreichenbach

.github/workflows/install-script.yml

@@ -37,20 +37,14 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        include:
-          - os: ubuntu-latest
-            shell: bash
-          - os: macos-latest
-            shell: bash
-          - os: windows-latest
-            shell: bash
+        os: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
 
       - name: Test install script functionality (simulated)
-        shell: ${{ matrix.shell }}
+        shell: bash
         run: |
           # Make script executable
           chmod +x install.sh
@@ -63,7 +57,7 @@ jobs:
 
       - name: Test script syntax against released version
         if: github.event_name == 'push' && github.ref == 'refs/heads/main'
-        shell: ${{ matrix.shell }}
+        shell: bash
         run: |
           # This will only work after we have at least one release
           # For now, just test the script syntax